Lexus ES manuals

Lexus ES: Relay

On-vehicle Inspection

ON-VEHICLE INSPECTION

PROCEDURE

1. INSPECT MAIN RELAY (EFI-MAIN NO. 1)

(a) Measure the resistance according to the value(s) in the table below.

Standard Resistance:

Tester Connection

Condition

Specified Condition

3 - 5

Battery voltage not applied between terminals 1 and 2

10 kΩ or higher

Battery voltage applied between terminals 1 and 2

Below 1 Ω

If the result is not as specified, replace the main relay (EFI-MAIN NO. 1).

2. INSPECT MAIN RELAY (EFI-MAIN NO. 2)

(a) Measure the resistance according to the value(s) in the table below.

Standard Resistance:

Tester Connection

Condition

Specified Condition

3 - 5

Battery voltage not applied between terminals 1 and 2

10 kΩ or higher

Battery voltage applied between terminals 1 and 2

Below 1 Ω

If the result is not as specified, replace the main relay (EFI-MAIN NO. 2).

3. INSPECT MAIN RELAY (A/F HTR)

(a) Measure the resistance according to the value(s) in the table below.

Standard Resistance:

Tester Connection

Condition

Specified Condition

3 - 5

Battery voltage not applied between terminals 1 and 2

10 kΩ or higher

Battery voltage applied between terminals 1 and 2

Below 1 Ω

If the result is not as specified, replace the main relay (A/F HTR).

4. INSPECT ELECTRONIC DRIVER UNIT RELAY (D INJ)

(a) Measure the resistance according to the value(s) in the table below.

Standard Resistance:

Tester Connection

Condition

Specified Condition

3 - 5

Battery voltage not applied between terminals 1 and 2

10 kΩ or higher

Battery voltage applied between terminals 1 and 2

Below 1 Ω

If the result is not as specified, replace the electronic driver unit relay (D INJ).

5. INSPECT NO. 2 IGNITION RELAY (IG2 NO. 1)

(a) Measure the resistance according to the value(s) in the table below.

Standard Resistance:

Tester Connection

Condition

Specified Condition

3 - 5

Battery voltage not applied between terminals 1 and 2

10 kΩ or higher

Battery voltage applied between terminals 1 and 2

Below 1 Ω

If the result is not as specified, replace the No. 2 ignition relay (IG2 NO. 1).

READ NEXT:

 Sfi System

 Precaution

PRECAUTION INITIALIZATION NOTICE: Before replacing the ECM, refer to Registration. Click here Perform Registration (VIN registration) after replacing the ECM. Click here Perform Learning

 Definition Of Terms

DEFINITION OF TERMS Term Definition Monitor Description Description of what the ECM monitors and how it detects malfunctions (monitoring purpose and details). Related DTCs Group of di

SEE MORE:

 Wiper Motor Power Source Circuit

DESCRIPTION This circuit is the power source circuit for the windshield wiper motor assembly. WIRING DIAGRAM CAUTION / NOTICE / HINT NOTICE: Inspect the fuses of circuits related to this system before performing the following procedure. Before replacing the main body ECU (multiplex network bod

 Diagnostic Trouble Code Chart

DIAGNOSTIC TROUBLE CODE CHART Hybrid Control System DTC No. Detection Item MIL Warning Indicate Link P056014 System Voltage (BATT) Circuit Short to Ground or Open Comes on Master Warning Light: Comes on P060647 Hybrid/EV Powertrain Control Module Processor Watchdog /

© 2016-2025 Copyright www.lexguide.net